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Name: ______________________________________ Period _______ Date: ________________ Water Potential Problems 1. What is the solute potential Ψs of a 1.0M sugar solution at 22 degrees Celsius under standard atmospheric conditions? 2. Zucchini cores are measured and determined to have a sucrose concentration of 0.36 M. Calculate the solute potential Ψs of these cells. (Temperature is same as question #1.) Will water go in or out of the plant cell? Plant cell pure water 3. If solute potential in the plant cell in question 2 is –6.25 bars and pressure potential is 6.25 bars, what is the water potential of the plant cell? What does this indicate in terms of water movement? 4. A dialysis bag containing 0.1% sucrose is placed in a beaker containing 0.4% sucrose. The beaker is open to the atmosphere. What is the pressure potential Ψp of the system? _____________ What is the water potential of this dialysis bag?________________ Water will move _______________ the dialysis bag. 5. What is the water potential for a solution in an open container that is 0.1M? (assume i = 1, and a temperature of 22°C) 6. What is the solute potential for a solution that is 0.5M? (assume i = 1, and a temperature of 10°C) 7. A plant cell has a solute potential of –4.0 bars and a pressure potential of 1.0 bar. What is its water potential? If this cell is placed in a solution with a water potential of –5.0 bar. What will happen to this cell? 8. A plant cell has a solute potential of –2.0 and a pressure potential of 0.0. What is its water potential? It is placed in a solution with a water potential of –1.0. What will happen to this plant cell? 9. If a cell’s ΨP = 2 bars and its ΨS = -3.5 bars, what is the resulting Ψ? 10. What is the solute potential Ψs of a 3.5M sugar solution at 22 degrees Celsius in an open beaker?